Slalom Waterski Course Dimensions and Diagrams

Use the below chart to help you build your slalom waterski course.

The IWSF site provides an official slalom course diagram. The site of Canadian Water Ski also provides an online visual graph of a slalom course.

USA Waterski also has a chart with diagram - Official Slalom Course Dimensions.

 

Slalom Waterski Course Dimensions

 
 DescriptionDimensionRange
Total Length849' 8 7/8"847' 7 38" - 851' 10 3/8"
Starting Gate to Ball 188' 7"88' 1 5/8" - 89' 1/4"
Ball 1 to Ball 2 Gates134' 6 1/8"133' 10 1/8" - 135' 2 1/4"
Center of Entrance Gate to Ball 196' 3 3/8"95' 9 5/8" - 96' 9 1/8"
Ball 2 to Ball 3 Diagonal154' 2 3/4"153" 5 3/8" - 155' 1/8"
Entrance Gate, Center of Course to Ball 44" 1 1/4"3' 10 3/4" - 4' 3 3/4"
Center Line of Course to Turn Ball37' 8 3/4"37' 4 1/4" - 38' 1 3/8"
Center Line of Course to Boat Gates3' 9 1/4"3' 4 3/4" - 4' 1 3/4"
55 Meter Buoys180' 5 3/8"179' 6 1/2" - 181' 4 1/4"